DE1184593B - Process for rinsing chemically pretreated metals before painting with paints dissolved or dispersed in water - Google Patents

Process for rinsing chemically pretreated metals before painting with paints dissolved or dispersed in water

Info

Publication number
DE1184593B
DE1184593B DEM48404A DEM0048404A DE1184593B DE 1184593 B DE1184593 B DE 1184593B DE M48404 A DEM48404 A DE M48404A DE M0048404 A DEM0048404 A DE M0048404A DE 1184593 B DE1184593 B DE 1184593B
Authority
DE
Germany
Prior art keywords
water
rinsing
before painting
dispersed
paints
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEM48404A
Other languages
German (de)
Inventor
Dr Friedrich Kaysser
Dr Heinz Keller
Dr Werner Rausch
Walter Stenger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL131372D priority Critical patent/NL131372C/xx
Priority to NL275534D priority patent/NL275534A/xx
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to DEM48404A priority patent/DE1184593B/en
Priority to FR880720A priority patent/FR1307240A/en
Priority to BE612027A priority patent/BE612027A/en
Priority to CH83862A priority patent/CH419775A/en
Priority to GB8226/62A priority patent/GB929644A/en
Priority to US178247A priority patent/US3154438A/en
Publication of DE1184593B publication Critical patent/DE1184593B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • B05D3/102—Pretreatment of metallic substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/20—Aqueous dispersion or solution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Chemical Treatment Of Metals (AREA)

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Internat. Kl.: C 23 gBoarding school Class: C 23 g

Deutsche KL: 48 d2-1/14German KL: 48 d2-1 / 14

Nummer: 1184593Number: 1184593

Aktenzeichen: M 48404 VI b/48 d2File number: M 48404 VI b / 48 d2

Anmeldetag: 15. März 1961Filing date: March 15, 1961

Auslegetag: 31. Dezember 1964Opening day: December 31, 1964

In den letzten Jahren gewinnt die Lackierung von Metallen mit »wasserlöslichen Lacken« zunehmend an Bedeutung. Es handelt sich hierbei um Lacke, die als Lösungsmittel Wasser enthalten. Die hierbei benutzten Lackbindemittel können auf der Basis von Phenolharz und auch von Melaminharz aufgebaut sein. Es sind jedoch auch wasserlösliche bzw. wasserdispergierbare Bindemittel entwickelt worden, die auf einer anderen Kunstharzbasis beruhen. Derartige Lacke enthalten üblicherweise neben dem Bindemittel noch Weichmacher, Pigmente, Verlaufverbesserer, Sikkative sowie als Lösungsmittel neben Wasser meist Alkohole und Glykole.In the last few years, the painting of metals with "water-soluble paints" has become increasingly popular in importance. These are paints that contain water as a solvent. The ones used here Varnish binders can be based on phenolic resin and melamine resin be. However, water-soluble or water-dispersible binders have also been developed which are based on based on a different synthetic resin base. Such lacquers usually contain the binder in addition to the binder plasticizers, pigments, flow improvers, siccatives and mostly as solvents in addition to water Alcohols and glycols.

Für die chemische Oberflächenbehandlung von Metallen vor der Lackierung sind andererseits seit langem alkalische Reiniger, phosphorsaure Reiniger, Phosphatierungsverfahren, Chromatierungsverfahren, Oxalatverfahren u. dgl. bekannt. Als letzte Behandlungsstufe der Oberflächenbehandlung dient eine Nachspülung in CrO3- und/oder phosphorsäurehaltigen sauren wäßrigen Lösungen.For the chemical surface treatment of metals before painting, on the other hand, alkaline cleaners, phosphoric acid cleaners, phosphating processes, chromating processes, oxalate processes and the like have been known for a long time. A final rinse in CrO 3 and / or acidic aqueous solutions containing phosphoric acid is used as the last treatment stage of the surface treatment.

Bei Anwendung dieser bekannten Verfahren zur Vorbehandlung vor der Lackierung mit wasserlöslichen Lacken sind bisweilen aus ungeklärten Gründen Schwierigkeiten aufgetreten. Diese bestanden in ungleichmäßigem Verlauf des Lackes auf der chemisch vorbehandelten Metalloberfläche oder in einer Koagulation des Lackes im Film oder im Tauchbecken.When using this known method for pretreatment before painting with water-soluble Lacquers have sometimes encountered difficulties for reasons that are not clear. These existed in uneven flow of the paint on the chemically pretreated metal surface or in a Coagulation of the paint in the film or in the plunge pool.

Es wurde nun gefunden, daß sich diese Schwierigkeiten beheben lassen, wenn mindestens im letzten Spülbad vor der Lackierung ein pH-Wert von größer als 7, jedoch nicht größer als 11, eingestellt und aufrechterhalten wird. Zur Einstellung des pH-Wertes können beliebige alkalisch reagierende Substanzen, z.B. NaOH, KOH, NaHCO3, Na2B4O7, Na2HPO4, benutzt werden. Da ein Verbleib von auftrocknenden Alkaliresten auf der Oberfläche zu den bekannten Nachteilen führen kann, erfolgt die pH-Einregulierung vorzugsweise mit Ammoniak und/oder organischen Aminen.It has now been found that these difficulties can be remedied if, at least in the last rinsing bath before painting, a pH of greater than 7, but not greater than 11, is set and maintained. Any alkaline substances, for example NaOH, KOH, NaHCO 3 , Na 2 B 4 O 7 , Na 2 HPO 4 , can be used to adjust the pH. Since drying alkali residues on the surface can lead to the known disadvantages, the pH is preferably adjusted with ammonia and / or organic amines.

Als organische Amine kommen insbesondere solche in Betracht, die beim Trocknen vor bzw. nach der Lackierung mindestens teilweise verdampfen. Bei der Auswahl werden solche bevorzugt, die keine Schädigungen beim Eintrag in den Lack hervorrufen, sondern in diesem pH-regulierend und gegebenenfalls vernetzend beim nachfolgenden Einbrennen des wasserlöslichen Lackes wirken.Particularly suitable organic amines are those which are before or after drying during drying at least partially evaporate from the paintwork. When choosing, preference is given to those that do not have any Cause damage when entering the paint, but in this pH-regulating and possibly have a crosslinking effect during the subsequent stoving of the water-soluble paint.

Günstige Ergebnisse wurden mit folgenden Aminen erzielt: Ammoniak, Diäthylamin, Triäthylamin, Triäthanolamin, Morpholin, Cyclohexylamin, Dicyclohexylamin, Aminopropanol, Aminoisobutanol.Favorable results were achieved with the following amines: ammonia, diethylamine, triethylamine, triethanolamine, Morpholine, cyclohexylamine, dicyclohexylamine, aminopropanol, aminoisobutanol.

Verfahren zur Nachspülung von chemisch
vorbehandelten Metallen vor der Lackierung mit
in Wasser gelösten bzw. dispergierten LackenProcess for rinsing chemically
pre-treated metals before painting with
Paints dissolved or dispersed in water

Anmelder:Applicant:

MetallgeseHschaft Aktiengesellschaft,MetallgeseHschaft Aktiengesellschaft,

Frankfurt/M., Reuterweg 14Frankfurt / M., Reuterweg 14

Als Erfinder benannt:Named as inventor:

Dr. Heinz Keller;Dr. Heinz Keller;

Dr. Friedrich Kaysser, Frankfurt/M.;Dr. Friedrich Kaysser, Frankfurt / M .;

Dr. Werner Rausch, Stierstadt (Taunus);Dr. Werner Rausch, Stierstadt (Taunus);

Walter Stenger, Frankfurt/M.Walter Stenger, Frankfurt / M.

so Die Konzentration des Amines richtet sich nach dessen Alkalität und Wasserlöslichkeit. Wichtig ist nur, daß ein pH-Wert von größer als 7 und nicht größer als 11 erreicht wird.
Die Nachspülbäder können Anionen, z. B. Phosphatanion, mono-, di- und trimere Fettsäuren, Mono- und Diphosphorsäureester enthalten, die unter anderem als Korrosionsinhibitoren wirken. Durch den Zusatz von Alkoholen und/oder Netzmitteln kann die Nachspülung verbessert werden.so The concentration of the amine depends on its alkalinity and water solubility. It is only important that a pH value greater than 7 and not greater than 11 is achieved.
The rinsing baths can contain anions, e.g. B. phosphate anion, mono-, di- and trimeric fatty acids, mono- and diphosphoric acid esters, which among other things act as corrosion inhibitors. The rinsing process can be improved by adding alcohols and / or wetting agents.

Von der Mitverwendung von Chromaten wird vorzugsweise abgesehen, weil diese zu Schwierigkeiten bei der Lackierung führen können. Die Zugabe von solchen Substanzen anorganischer oder organischer Art, die selbst nach dem Einbrennen des Lackfilmes in diesem in wasserlöslicher Form vorliegen, wird vorzugsweise vermieden, da hierdurch die Tropenbeständigkeit des Lackfilmes leidet. So empfiehlt es sich, für den Ansatz des alkalischen Nachspülbades salzfreies Wasser zu verwenden.It is preferable to refrain from using chromates because they cause difficulties during painting. The addition of such substances, inorganic or organic Type that is present in water-soluble form even after the varnish film has been stoved preferably avoided, as this impairs the resistance of the paint film to tropical conditions. So recommends to use salt-free water for the alkaline rinsing bath.

Die erfindungsgemäße Art der Nachspülung von Metallen nach der chemischen Oberflächenbehandlung und vor dem Lackieren mit Lacken auf Basis wasserlöslicher und/oder wasserdispergierbarer Bindemittel kann sich beispielsweise an folgende Oberflächenbehandlungen anschließen: Alkalische, neutrale oder saure Reinigung, z. B. mit Phosphorsäure und/oder primäre Phosphate enthaltenden Lösungen; Phosphatierung, Chromatierung, Oxalatierung.
Die Nachspüllösungen können im Tauchen, Fluten oder Spritzen angewendet werden. Eine erhöhte Temperatur der Nachspüllösung unterstützt eine Trocknung der Teile vor der Lackierung.The type of rinsing of metals according to the invention after chemical surface treatment and before painting with paints based on water-soluble and / or water-dispersible binders can, for example, follow the following surface treatments: Alkaline, neutral or acidic cleaning, e.g. B. with solutions containing phosphoric acid and / or primary phosphates; Phosphating, chromating, oxalating.
The rinsing solutions can be used by immersion, flooding or spraying. An increased temperature of the rinsing solution supports the drying of the parts before painting.

409 760/382409 760/382

Claims (2)

3 4 Patentansprüche: Lösung benutzt wird, deren pH-Wert größer als 7,3 4 Claims: Solution is used with a pH value greater than 7, 1. Verfahren zur Nachspülung von Metallen jedoch nicht größer als 11 ist.1. Method for rinsing metals but not greater than 11. nach der chemischen Oberflächenbehandlung und after chemical surface treatment and 2. Verfahren nach Anspruch 1, dadurch ge-2. The method according to claim 1, characterized vor dem Lackieren mit Lacken auf Basis wasser- kennzeichnet, daß zur Alkalisierung des Spülwas-before painting with water-based paints indicates that to alkalize the rinsing water löslicher und/oder wasserdispergierbarer Binde- 5 sers anorganische und/oder organische Amine,soluble and / or water-dispersible binder, inorganic and / or organic amines, mittel, dadurch gekennzeichnet, daß gegebenenfalls unter Zusatz von Korrosionsinhi-medium, characterized in that optionally with the addition of corrosion inhibitors mindestens für die letzte Spülung eine wäßrige bitoren, benutzt werden.An aqueous bitter can be used at least for the last rinse. 409 760/382 12.64 © Bundesdruckerei Berlin409 760/382 12.64 © Bundesdruckerei Berlin
DEM48404A 1961-03-15 1961-03-15 Process for rinsing chemically pretreated metals before painting with paints dissolved or dispersed in water Pending DE1184593B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL131372D NL131372C (en) 1961-03-15
NL275534D NL275534A (en) 1961-03-15
DEM48404A DE1184593B (en) 1961-03-15 1961-03-15 Process for rinsing chemically pretreated metals before painting with paints dissolved or dispersed in water
FR880720A FR1307240A (en) 1961-03-15 1961-12-01 Process for rinsing metals after chemical treatment and before application of paints or similar plasters dissolved or dispersed in water
BE612027A BE612027A (en) 1961-03-15 1961-12-27 Process for rinsing metals after chemical treatment and before application of paints or similar plasters dissolved or dispersed in water
CH83862A CH419775A (en) 1961-03-15 1962-01-24 Process for rinsing metals after chemical surface treatment
GB8226/62A GB929644A (en) 1961-03-15 1962-03-02 Improvements relating to the treatment of metallic surfaces
US178247A US3154438A (en) 1961-03-15 1962-03-08 Process for treating metal surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM48404A DE1184593B (en) 1961-03-15 1961-03-15 Process for rinsing chemically pretreated metals before painting with paints dissolved or dispersed in water

Publications (1)

Publication Number Publication Date
DE1184593B true DE1184593B (en) 1964-12-31

Family

ID=7306215

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM48404A Pending DE1184593B (en) 1961-03-15 1961-03-15 Process for rinsing chemically pretreated metals before painting with paints dissolved or dispersed in water

Country Status (6)

Country Link
US (1) US3154438A (en)
BE (1) BE612027A (en)
CH (1) CH419775A (en)
DE (1) DE1184593B (en)
GB (1) GB929644A (en)
NL (2) NL131372C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277646B (en) * 1963-06-27 1968-09-12 Metallgesellschaft Ag Process for increasing the corrosion resistance of surfaces made of aluminum and aluminum alloys

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197344A (en) * 1962-04-23 1965-07-27 Hooker Chemical Corp Compositions and methods for forming coatings on metal surfaces
DE1216066B (en) * 1963-01-29 1966-05-05 Henkel & Cie Gmbh Process for the treatment of degreased metal surfaces stained with an acidic solution before enamelling
GB1076392A (en) * 1964-07-13 1967-07-19 Toyo Kohan Co Ltd Process for treating electrolytically chromated metal surfaces
US3364080A (en) * 1964-10-22 1968-01-16 Amchem Prod Method of improving the corrosion resistance of chromate conversion coated aluminum surface
US3395053A (en) * 1964-11-17 1968-07-30 Nasa Usa Thermal control coating
US3290235A (en) * 1965-12-02 1966-12-06 Glidden Co Electrodeposition of acidic resin with subsequent anodic electrolysis in dispersioncontaining metal treating oxyanions
US3519458A (en) * 1966-03-01 1970-07-07 Hooker Chemical Corp Method for reducing the corrosion susceptibility of ferrous metal having fluxing agent residue
JPS5231890B1 (en) * 1970-07-07 1977-08-18
US4048374A (en) * 1973-09-01 1977-09-13 Dynamit Nobel Aktiengesellschaft Functional organophosphonic acid esters as preservative adhesion promoting agents and coating for metals
US3973998A (en) * 1975-05-05 1976-08-10 Celanese Coatings & Specialties Company Rinsing solutions for acid cleaned iron and steel surfaces
US4590100A (en) * 1983-10-28 1986-05-20 The United States Of America As Represented By The Secretary Of The Navy Passivation of steel with aqueous amine solutions preparatory to application of non-aqueous protective coatings
WO1996009899A1 (en) * 1994-09-26 1996-04-04 E.R. Squibb & Sons, Inc. Stainless steel acid treatment
EP0781258B1 (en) * 1994-09-26 2003-11-05 Steris, Inc. Stainless steel alkali treatment
US10575520B2 (en) 2016-03-16 2020-03-03 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College Cyclohexylamine-based compounds and uses thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418608A (en) * 1939-05-22 1947-04-08 Parker Rust Proof Co Corrosion-resistant metallic article and method of making the same
US2768103A (en) * 1952-03-18 1956-10-23 Heintz Mfg Co Method for coating metals
US2768104A (en) * 1952-03-25 1956-10-23 Heintz Mfg Co Method for coating iron

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277646B (en) * 1963-06-27 1968-09-12 Metallgesellschaft Ag Process for increasing the corrosion resistance of surfaces made of aluminum and aluminum alloys

Also Published As

Publication number Publication date
GB929644A (en) 1963-06-26
NL131372C (en)
US3154438A (en) 1964-10-27
NL275534A (en)
CH419775A (en) 1966-08-31
BE612027A (en) 1962-04-16

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